Add error handling to lseek call.

4 years ago · 7c9e2723ae
parent 5ea5494f4b
commit 7c9e2723ae
1 changed files with 6 additions and 1 deletions
--- a/libfreshclam/libfreshclam_internal.c
+++ b/libfreshclam/libfreshclam_internal.c
@ -223,7 +223,12 @@ fc_error_t load_freshclam_dat(void)
            }

            /* Rewind to just after the magic bytes and read data struct */
-            lseek(handle, strlen(MIRRORS_DAT_MAGIC), SEEK_SET);
+            if (-1 == lseek(handle, strlen(MIRRORS_DAT_MAGIC), SEEK_SET)) {
+                char error_message[260];
+                cli_strerror(errno, error_message, 260);
+                logg("!Can't seek to %lu, error: %s\n", strlen(MIRRORS_DAT_MAGIC), error_message);
+                goto done;
+            }

            mdat = malloc(sizeof(freshclam_dat_v1_t));
            if (NULL == mdat) {